Cal. Government Code § 31470.2

(a) All sheriffs, undersheriffs, chief deputies sheriff, jailers, turnkeys, deputies sheriff, bailiffs, constables, deputies constable, motorcycle officers, aircraft pilots, heads and assistant heads of all divisions of the office of the sheriff, detectives and investigators in the office of the district attorney, marshals, court service officers only in a county of the third class, as defined in Sections 28020 and 28024, and all regularly appointed deputy marshals are eligible. (b) In a county of the eighth class, as defined in Sections 28020 and 28029, both as amended by Chapter 1204 of the Statutes of 1971, all peace officers in the Park Ranger class series in the Department of Regional Parks, Recreation, and Open Space are eligible. This subdivision shall not be operative until such time as the county board of supervisors shall, by resolution adopted by a majority vote, make this subdivision applicable in the county. (c) Local prosecutors, local public defenders, and local public defender investigators are eligible if the county board of supervisors adopts a resolution by a majority vote making this subdivision and Section 31470.14 applicable in the county.